Two important characteristics of maps should be noticed. A map is not the territory it represents, but, if correct, it has a similar structure to the territory, which accounts for its usefulness. ... If we reflect upon our languages, we find at best they must be considered only as maps.

— Alfred Korzybski

Science and Sanity: An Introduction to Non-Aristotelian Systems and General Semantics (1958), 58.

This is not a statement made by Alfred Korzybski, although he quoted it and attributed it as "an old maxim" in the Introduction to the second edition of his book, Science and Sanity: An Introduction to Non-Aristotelian Systems and General Semantics (1941, 4th ed. 1958), xxxvii. It is included here to provide a correction for readers who find it listed elsewhere as an original quote he made.

In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) -- Carl Sagan